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首页> 外文期刊>Korean Journal of Horticultural Science & Technology >Pollen tube elongation and fruit set of Asian pear (Pyrus pyrifolia) upon mechanical damage on the style. [Korean]
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Pollen tube elongation and fruit set of Asian pear (Pyrus pyrifolia) upon mechanical damage on the style. [Korean]

机译：花粉管伸长和亚洲梨（ Pyrus pyrifolia ）受机械损伤时的坐果性。 [韩文]

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摘要

In the present study, pollen tube growth and fruit set in Asian pear (Pyrus pyrifolia) were examined upon the mechanical damage on the stigma and style following the artificial pollination. When the upper middle part of style was cut off at 48 h after the artificial pollination, pollen tube grew to the middle of the style and the subsequent pollen tube elongation and fruit set normally occurred. When the style was cut off before the pollen tube reached the middle of the style, however, no pollen tube elongation and fruit set occurred. With the pollen tube elongation through the style, callose plugs at the basal part of the pollen tube were formed to the direction of the elongation at regular intervals. When the upper part of pollen tube attached pollen grain was cut off, however, callose plugs were formed defectively in the pollen tube, and the pollen tube opened and lost their turgor pressure. These facts might be the reason for the ceased or delayed pollen tube elongation and ultimately the failure of the fertilization.
机译：在本研究中，通过人工授粉对亚洲梨（Pyrus pyrifolia ）的柱头和花柱机械损伤进行了研究，研究了花粉管的生长和坐果。在人工授粉后48 h切断花柱的上部中部，花粉管长到花柱的中部，随后通常发生花粉管的伸长和坐果。但是，在花粉管到达花柱中部之前切断花柱时，没有花粉管伸长和结实发生。随着花粉管的伸长，花粉管基部的call状栓以一定间隔朝伸长方向形成。但是，当切下附有花粉粒的花粉管的上部时，在花粉管中会形成call质堵塞物，花粉管会打开而失去膨胀压力。这些事实可能是花粉管伸长停止或延迟并最终导致受精失败的原因。

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